Round|Lab Grown|IGI

1.51ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG816614263

Shape and cutting style on the report: Round brilliant

Certificate IGI LG816614263

Diamond specifications and retailer prices

From $201 USD
As of November 5, 2026
Save $966 USD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,167 USD at MOH London · As of November 2, 2026
View at MOH London

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG816614263 or 816614263. Listed at 14 retailers as of November 2, 2026, with prices from $201 to $1,167, a $966 spread on the same certified stone. MOH London lists it at $1,167. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816614263
Dimensions7.41 × 7.35 × 4.50 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.41 mm7.35 mm1.51 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816614263
Side View
Table 60.0%Crown 35.9°Girdle: MediumPavilion 40.8°Culet: NoneDepth 61.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $1,167 USD|Low: $201 USD|High: $1,181 USD|Avg: $633 USD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 7$201 USD
Retailer 8$250 USD
Retailer 9$433 USD
Retailer 3$452 USD
Retailer 2$454 USD
Retailer 5$720 USD
Retailer 4$805 USD
Retailer 6$930 USD
MOH London$1,167 USD

43 data points across 9 retailers

14 retailers$201 USD to $1,167 USD

A
Cheapest Retailer
-
$201 USD
A
Retailer 2
-
$233 USD
View
A
Retailer 3
-
$250 USD
View
Retailer 4
-
$250 USD
View
Price last confirmed 12 days ago
A
Retailer 5
-
$427 USD
View
B+
Retailer 6
-
$433 USD
View
A
Retailer 7
-
$452 USD
View
A
Retailer 8
-
$454 USD
View
B+
Retailer 9
-
$720 USD
View
B+
Retailer 10
-
$802 USD
View
B
Retailer 11
-
$805 USD
View
B
Retailer 12
-
$855 USD
View
B
Retailer 13
-
$930 USD
View
Most Expensive
B
MOH London
LG816614263 · Nov 2
$1,167 USD
£919 GBP
View
13 more retailers have this diamond
Prices start from $201 USDSave up to $966 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.51ct Round
$201 USD